Early starting MLB 2015-16 offseason thread

I know we have a postseason thread on here, but I'm figuring that's for the playoff games and the teams in them. As it is, there are already being some moves made today for the teams whose season has ended:

Matt Williams, of course, and his coaching staff were fired by the Nationals

The Angels introduced Billy Eppler, the former Yankees assistant GM, as their GM today, and board favorite Mike Scioscia confirmed to the OC Register that he'll be back as manager in 2016 (he had an opt-out clause that he won't exercise)

Padres interim manager Pat Murphy won't be back in 2016. Former Padre Phil Nevin has been rumored for that job.

Mariners new GM Jerry Dipoto says he doesn't intend to trade Nelson Cruz, Felix or Cano because he thinks the Mariners are close to contention with those guys. He wants to build around those guys, Seager and Taijuan Walker.

Maybe the Mariners can contend quickly, but given how poorly their farm system is rated, I don't really see how they can turn it around quickly without flipping Cruz, Cano and/or Felix for several impact prospects. Seems overly optimistic to me.